Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2020-12-31 |
As at 2019-12-31 |
As at 2018-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
249,862
EUR
|
276,789
EUR
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets other than goodwill [abstract] | |||
| Intangible assets other than goodwill |
5,120
EUR
|
4,776
EUR
|
— |
| Goodwill |
12,643
EUR
|
19,180
EUR
|
— |
| Miscellaneous non-current assets [abstract] | |||
| Other non-current assets |
2,035
EUR
|
126,000
EUR
|
— |
| Trade and other current receivables [abstract] | |||
| Current trade receivables |
55,020
EUR
|
53,413
EUR
|
— |
| Other current receivables |
14,216
EUR
|
10,399
EUR
|
— |
| Current prepayments and current accrued income including current contract assets [abstract] | |||
| Current accrued income including current contract assets [abstract] | |||
| Current contract assets |
90,812
EUR
|
125,774
EUR
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
38,570
EUR
|
40,875
EUR
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
90,389
EUR
|
55,609
EUR
|
73,572
EUR
|
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners [abstract] | |||
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners |
13,360
EUR
|
9,980
EUR
|
— |
| Classes of other provisions [abstract] | |||
| Other provisions [abstract] | |||
| Other non-current provisions |
0
EUR
|
1,753
EUR
|
— |
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
160,342
EUR
|
194,145
EUR
|
— |
| Current borrowings and current portion of non-current borrowings [abstract] | |||
| Current portion of non-current borrowings |
37,889
EUR
|
17,454
EUR
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Trade and other current payables [abstract] | |||
| Current accruals and current deferred income including current contract liabilities [abstract] | |||
| Current deferred income including current contract liabilities [abstract] | |||
| Current contract liabilities [abstract] | |||
| Current contract liabilities |
5,365
EUR
|
2,889
EUR
|
— |
| Trade and other current payables |
52,703
EUR
|
52,908
EUR
|
— |
| Miscellaneous current liabilities [abstract] | |||
| Other current liabilities |
31,718
EUR
|
29,760
EUR
|
— |
| Issued capital [abstract] | |||
| Issued capital |
22,330
EUR
|
22,330
EUR
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
200,383
EUR
|
193,947
EUR
|
— |
| Miscellaneous equity [abstract] | |||
| Capital reserve |
37,563
EUR
|
37,563
EUR
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
581,504
EUR
|
605,601
EUR
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
303,675
EUR
|
297,484
EUR
|
— |
| Current liabilities |
144,974
EUR
|
122,228
EUR
|
— |
| Assets less current liabilities [abstract] |